Anyone know where I can buy some weather stripping for our cars for a good price? I dont need the windshield, but all doors and rear window needs to be replaced, not the inside rubber but the outside one

I assume the parts you want are the run channels. Try Hamilton Chevrolet. If they do not have it, the only other source is the junk yard. Most of the front door run channels are shrunk at the front. The rears tend to have rounded corners that pull away from the window frame.